Effects of green plant waste compost on soil remediation in urban greenbelts
绿化植物废弃物堆肥对城市绿地土壤的改良效果

For the fact of the degradation of urban greenbelt soils and the difficulty in disposal of organic waste in the city, we have remedied the quality of some typical urban soils by using different amounts of green plant waste compost, a typical product of urban greening waste. The results showed that the compost could improve soil quality by enhancing water conservation, reducing soil pH value, increasing the contents of organic matter, total nitrogen, total and soluble phosphorus, microbial biomass C and N and the population of total microorganism. Although the compost had little effect on the total potassium content of soils, it significantly increased the content of rapidly available potassium by two fold. It proved that the compost could remediate soil physiochemical characteristics and improve the soil quality, and the efficiency of soil remediation increased with the increase of the compost amount used. In general, utilization of green plant waste compost has obvious impact in restoring urban degraded soils and in reducing the amount of urban waste, and it is useful for improving the urban ecological quality.